FILE MANAGING METHOD AND DATA RECORDER USING THE SAME, DATA REPRODUCING APPARATUS, DATA RECORDING/REPRODUCING APPARATUS, AND DISK RECORDED BY THE FILE MANAGING METHOD

摘要

A file management method for reducing a seek operation to a minimum even when a UDF file system is used is provided. The file management method has file management information for managing contiguous blocks on a disc as an extent and for grouping the extent as a file and managing the file, and includes the steps of: when creating a new directory on the disc, reserving as a reserved area for recording file management information on the file a file or a data area in the directory; and reserving a directory block having a predetermined size in the reserved area for recording a file entry of the directory and a file identifier descriptor of the directory.